User manual

USART Registers: SPI Mode
15-17USART Peripheral Interface, SPI Mode
UxBR0, USART Baud Rate Control Register 0
76543210
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
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UxBR1, USART Baud Rate Control Register 1
76543210
2
15
2
14
2
13
2
12
2
11
2
10
2
9
2
8
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UxBRx
The baud-rate generator uses the content of {UxBR1+UxBR0} to set the
baud rate. Unpredictable SPI operation occurs if UxBR < 2.
UxMCTL, USART Modulation Control Register
76543210
m7 m6 m5 m4 m3 m2 m1 m0
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UxMCTLx
Bits
7−0
The modulation control register is not used for SPI mode and should be set
to 000h.